Bock-crttsheb



C. 0. MICHAELSEN.

ROCK CRUSHER. APPLICATION mzp OCT. 28. 1920.

4 SHEETS-SHEET 2- Rflifi Al g- 16, 192 1.

INVENTOR ATTORNEY C. 0; MICHAELSEN.

ROCK CRUSHER.

APPLICATION FILED 0U. 28. 1920.

Reissued Aug. 16, 192 1. 1 5, 1 79.

\ 4 SHEETS-SHEET 3- //v Vf/VTOR Charles 0. .Mz'cfiaels'era A TTORIVE YUNITED STATES,

PATENT OFFICE}.

MACHINERY COMPANY, A

CORPORATION OF NEVADA.

aoox-onusrmn.

Specification of Reissued Letters Patent. Reissued Aug. 16,1921.

Original No. 1,068,889, dated June 3, 1913, Serial No. 145,726, filedFebruary 1,1913. Application for reissue filed October 28, 1920. SerialNo. 420,232.

To all whom it may concern Be it known that I, CHARLES 0. MICHAEL- SEN,a citizen of the United States, and a resident of Minneapolis, in thecounty of Hennepin and State of Minnesota, have invented certain newand" useful Improve ments in Rock-Crusheraof which the fol lowing is aspecification.

My invention relates to machines for breaking; or crushing oreand thelike, and it is the object thereof to provide in a machine of this kindmeans for actuating a pair of crushing-jaws so as to produce anoscillating movement'of the jaws in which certain portions thereof willremain at a substantially constant distance from each other while otherportions of the jaws will move toward and away from each other, the

I jaws also having a certain sliding or rubchine being removed,'Fig. 2is a longitudinal vertical sectional view of the machine, the sectionbeingon' the plane of the line w-m of Fig. 4, Fig; 3 'is a horizontalsec tional view on the plane of the line yy of a Fig. -1, Fig.4 is atransverse vertical section on the plane of the line 2-2 of Fig. 2, Fig.5 is a detail section of the'swinging beam and jaw-plate on the plane"of the line 0-0 of Fig. 2,"and Fig. 6 is a detail plan view ofone" ofthe connecting links for the rock shown: v

Ting-beam and swinging-beam. c

In the construction shown I employ a frame'consi'sting" of theside-pieces 1,"-each ofwhich-has at theends thereof. the laterallyextendingflanges 2 and 3. The-ends of said flan es are machined smoothand laced togeter, and the'tw'o sides'of the frameare secured togethertransverse bolts. 4w passing through flanges, as

"The main or'd'riv'ing shaft 5 extends trans; versely through the framenear the rearward end thereof, being journaledin boxes 6 dis,

posed in suitable 'guideways in the frame. I

Said boxes have slotted flanges extending over the sides of the frame;bolts 7 being passed through the' flanges, as shown; Adjusting-screws 8are passed through the end of the frame, and li'ning-plates9 aredisposed in the guideways so as to approximately fill the longitudinalspace therein not occupied by the boxes. By changing the liningplates 9and manipulating-the screws 8, the positions of the boxes andthe'shaft'may be varied longitudinally of the frame for the purposehereinafter set forth. On the ends of the shaf t 5 are carriedfly-wheels 10, one or both of which may be used as a pu'lley or pulleysand connected by belt with'a suitable'source of power. On'the centralportion of the shaft is an eccentric 11, and around the eccentric isdisposed the ececntric-slide 12, a roller bearing 13 being placedbetween the eccentric and the slide, as shown. The forward end of theeccentric-slide is forked and passes slidably over a block 14 which ispivotally mounted on a transverse rod 15. The upper and lower sides ofthe eccentric-slide have transverse rectangular channels made thereinand in said channels are disposed the facing-blocks 16 of which thesides remote from'the" slide have transverse cylindro-segmental'concavities therein. In said concavities are disposed therocking-blocks 17 'offwhich both the-upper and lower faces are convexand of cylindro-seg mental form. On the outer faces of the blocks 17 arefitted the rocking slides 18 of which the outer surfaces are flat andfit slidably against the facing-plates 19 secured on the adjacent-facesof the horizontalp'or tion of the levers 20 and 21. Said levers areconnected to the shafts 22 and-'23,'-respec tively; The end portions ofsaid shafts are journaled in bushings 291 which pass through the sidesof the P frame, the bushingshaving flanges at their outer ends whichare"secured by screwsto the frame; as shown.

The portions of the facing-plateswbetween the levers and rocking-slidesare wedgeshaped, the plates have slotted flanges overhanging 'thes'idejs of the levers, *and suitable screws are passed through the"slots in the flanges -to= secure the plates to the levers.

by means of the nuts 28,

On the front sides of 21 arefiat-surfaces on which aresecured the flatfacing-plates; 29. Said plates are-slidably engaged: by theiflat sidesof the-rocking-slides 30, the opposite sides'of the slides compressionof ;the springs: may. be varied,

being concave, and fitting upon the convert surfaces of the blocks 31which arelset in transverse rectangular channels in the rearward side ofrocking-beam 32.

The. beam .32 is mounted on atransverse shaft. 33 which passes throughthe central part' of thebeam. and is journaled in bush ings-24 in theframe, similarly to the-shafts 22 and. 23. Qn'the front face ofth'e rocking-beam the transversely serrated jawplate 34 is secured bymeans ofbolts 35 passing through the plate and the beam; A similar jaw-plate 36is secured by bolts 37 to theswinging-beam 38' Which is hung on atransverse, shaft 39. Avswinging beam 38 is pivoted near its upperendand on'an axis parallel to the axis of the rockingbeam.

Said shaft is jou-rnaled in bearing-boxes 40' which are held in:suitable guideways in the frame, the: boxes having slotted flanges whichfit against the outer sides of the frame and are secured thereto byscrews passing through the slots. The boxes 40 may be adjustedlongitudinally of the guideways by means of screws 41 which pass throughthe ends of-the frame, as shown in Fig. 3,-lining plates 42 beingemployed to fill in the spaces between the boxes and the ends of theguideways;

The inner sides of the frame adj acentzto the rockingrbeam andswingingsb'eaan are covered by plates 43 which are preferably of hardsteel and smooth-surfaced. Through the lower ends of the beams arepassed shafts 44 and- 45 WhicheX-tend through arouate slots in theplates 43, the slots being I concentric to the respective shafts 33. and

3.9. The ends of the shafts 44 and 45. are connected to each other bylinks each consisting of two parts 46 and- 47 having ,overlappinserrated faces, and bolts 48-passing throng slots therein to hold theserrated faces together. The length of the links may be varied bysecuring the overlapping parts in different relations. to each other;

Upon the upper part of the frame above the rochingbeam and swinging-beamis dis posed a hopper consisting of t aside-plates 49 and transverseplates-5Q. and 51. The

plate 50 is fixedly c nnected with the sideplates, and plate 51 isconneeted there to bolts which ass through longitudinalslots"thereinf'so' Eat the position of the plate may "be var-italongitudinally. The

prov de ered over by plates 54.

Behind the hopper a coverrplate "55 is placed across the top :of the:frame. so} as to-inclose the aQtuati-ng mechanism: and protect it fromdust and the 1lJIB As a further means of preventing dust and; abrasivematerial .fromreachingthe bearings and working. surfaces-of (theactuating mechanism I provideychannels v.56 in the S d f; the. rockingbeam,;--swinging-beam and jajvwplates adjacent to the. plates 48 ,on theinnel? Sides of the frame. Theupper ends-of the channels areclosed so asto preventmaterial from the hopper passing down into them, and the lowerends-are open so that any material that may work back from the crushingthroat, between the sides ofthe jaws and theplates 43, may, uponreaching the channels, pass down through them and -befdisharged at the.lower ends thereof. I 1

I In theoperation of themachinethe materials tobe crushed are fed intothe hopper and-pass therefrom bygravity into :the throat orcrushing-space between the jawplates carried onthe adjacent faces of therocking-beam and swinging-beam; Rotation-inf themain shaft 5.causes avertical oscillating. and longitudinal: reciprocating of theeccentric-slide, and also a slight tilting movement thereofresultingfrom its engagement-with the pivotedblock 14. The verticalmovements of the eccentric-slide are communicated to the levers 20 and21, the tilting and 1011 itudinal, reciprocating movements of the slidebeing permitted'by the Oscillationor rocking of th-eparts 17 and 18,.and the slidin "movement of the latter uponthe facing-p ates 19. Theoscilbearing blocks .31.. The movements of the lower end of therocking-beam 32 are com In-unicated by the connecting links between theshafts 44 and 45 to thelower end of the swinging-beam 38.

Thew dth of the throat. between-the upper ends: of the. jaw-platesmay bevaried by adjusting the position of the shaft 39 longitudinally of theframe, a similar adjustvment-beingmade of the: hopper end-plate TheWidth of the throat between-the lower ends of the jaw plates may bevaried by varying the length of the connecting links between the shafts44 and 45. The same adjustments will serve to compensate wear of thefaces of the jawplates. The movements imparted to the levers 32 and 38by the actuating mechanism are such that t e width of the lower end ofthe throat between the aw-plates is practically constant, while thewidth of the throat at the upper part thereof varies considerably, theupper parts of the jaws moving alternately toward and away from eachother. There is also a certain vertical movement of the jaws relative toeach other, the lower end of the jaw 36 movin slightly upward while theadjacent end 0 the jaw 34 is moving downwardly, and the latter thenmoving upward while the other is moving downwardly. This movementresults in a rubbing or scouring of the materials between the jaws inthe lower part of the throat.

By varying the position of the main shaft longitudinally of the framethe amount of movement imparted to the levers 20 and 21 may be varied,the throw of the levers being increased as the main shaft is movedtoward the fulcrum-shafts 22 and 23, and decreased as the distance fromthe fulcrum-shafts to the main-shaft is increased.

I claim:

1. In a machine of the character described, a rocking beam, a swingingbeam, jaw plates on the adjacent faces of the beams, means for directingthe material into the space between the jaw plates, and means comprisinga shaft for the rocking beam pivotally sup porting the same near itscentral part, a shaft for the swinging beam pivotally supporting thesame near its upper end, a link, a shaft fixed to the lower end of eachbeam and pivotally connecting each beam with one end of the link andpositioning the link axially of said shafts in spaced relation to thebeam ends, said last named means to rovide, upon the movement of one ofthe Beams, an oscillatory movement of both beams with a simultaneousvertical movement of the opposing faces of the beams relatively to eachother, the simultaneous oscillation of the beams causing said opposingfaces at the upper ends of the beams to move alternately toward and awayfrom each other while the lower end portions of said opposing facesremain at a substantially constant distance from each other.

2. In a machine of the class described, a horizontal driving-shaft, aneccentric carried thereon, a tilting body disposed around the eccentric,two levers having horizontal portions extending respectively above andbelow the tilting body. the levers being fulcrumed on axes near ahorizontal plane passing through the axis of the driving-shaft, slidingand rocking bearing-members disposed between the adjacent faces of thelevers and the tilting body, a rocking beam pivoted at its central parton an axis disposed near the lever fulcrums, the levers havingplane-surfaced parts adjacent to the rocking-beam above and below theaxis thereof, said lever parts being approximately parallel to the saidportions of the rockingbeam, and rocking and sliding bearing-membersdisposed between said lever parts and said portions of the rocking beam.

3. In a machine of the class described, a driving shaft, an eccentriccarried by the shaft, a tilting body disposed around the eccentric, twolevers having horizontal portions extending respectively above and belowthe tilting body, the levers being fulcrumed on axes near a horizontalplane passing through the axis of the driving-shaft, sliding and rockingbearing-members disposed between the adjacent faces of the levers andthe tilting body, a rocking-beam pivoted at its central part on an axisdisposed near the lever fulcrums, rocking and sliding bearing-members,disposed between the levers and the adjacent parts of the rocking-beamabove and below the axis thereof, and means for varying the position ofthe driving shaft toward and away from the lever fulcrums to change thethrow of the levers caused by the eccentric and tilting body.

4. In a machine of the class described a frame, beams mounted tooscillate between the sides of the frame, jaw-members on the adjacentfaces of the beams, lining-plates secured on the inner sides of theframe and slidably engaged by the lateral edges of the jaw-members, saidplates inclosing the sides of a vertical throat between the jaw-members,and means forming channels in the edges of the jaw-members adjacent tothe lining-plates and extending parallel to the adjacent faces of the jaw-members.

In testimony whereof I have hereunto subscribed my name in the presenceof two witnesses.

CHARLES O. MICHAELSEN. Witnesses:

CHARLES P. BROWN, Cnmsrnm Lunwro.

